Pump or engine lubricative system



w. F. ROSER ET AL PUMP OR ENGINE LUBRICATIVE SYSTEM Filed Oct 26, 1927 A TTORNE Y.

Patented June 12, 1928.

WILBUB r. BOSEB am) ARTHUR c. em, or MANSFIELD, 01110. I

PUMP R ENGINE LUBBICATIVE SYSTEM.

Application filed October 26, 1927. Serial No. 228,886.

This invention relates to pumps and more particularly to lubricative systems for pumps and engines having certain common characteristics.

It aims to provide an improved oil impelling and distributive system adaptable especially to drainage or road pumps used in various engineering and constructive pro- 'ects. 1 The invention will be best understood by reference to the appended drawings wherein a lubricative system embodying the same is illustrated in application to a drainage pump of the reciprocating plunger type.

In said drawings:

Fig. 1 is a perspective plan view of a conventional pump with upper casing members removed to reveal the working parts and lubricative system applied thereto;

Fig. 2 is a sectional elevation taken on the line 2-2 of the first figure, one of the parts being shown fragmentarily.

Fig. 3 is a section of the parts shown in the second figure taken on a line at right angles thereto; and

Fig. 4 is a sectional elevation taken on the line 4-4 of said first figure.

Referring to the drawings, the illustrative pump is of the triplex reciprocating plunger type embodying a frame 5 with main casing 6 supporting and housing its working parts.

Said parts include a crank-shaft 7 journaled in bearings 8 and carrying a bullgear 9 by which it is driven; pit-man-rods 10 connected to and actuated by said crankshaft for reciprocating the pumping plungers within guides 11; a counter-shaft 12 supported in bearings 13 and having a pinion 14 at one end in drive transmitting engagement with the aforesaid gear 9 and in intermediate gear 15 at its other end for receiving the drive; together with a driving shaft 16 carrying a pinion 17 in engagement with said gear 15 for imparting a drive to said counter-shaft. In this instance the free end of the driving shaft 16 is journaled in an out-board bearing 18 while its opposite end is connected through a clutch 19 with a power shaft such for instance as the crank-shaft of an internal combustion engine (not shown).

The out-board bearing 18, the engine pinion 17 and the intermediate gear 15 on the counter-shaft are advantageously housed within a separate casing 20 at the side of the main casing.- v

The operation of the pump will be understood from the foregoing brief description of its functioning parts and inasmuch as the pump constructlon is not the subjectmatter of the present invention, except in so far as it embodies the lubricative system applied thereto, a further or more detailed description thereof is considered unnecessary.

The illustratitve embodiment of the improved system for lubricating the working parts of the pump (or engine) according to the claimed invention includes structural features shown clearly in the sectional views of the drawings to which reference will be made in further description.

An oil feed or impelling elementis exemplified by the pinion 21 adapted to be driven by the bull-gear 9 on-the crankshaft of the pump (see Figs. 2 and 3). This pinion is shown formed with a plurality series of orifices 21 extending from the recesses between its teeth to the bore thereof at an angle of approximately fifteen degrees.

In this instance said pinion is carried idly on a hollow and stationary shaft 22 having spaced orifices 22 registering with the seried orifices in the pinion, said shaft being supported over the top of the aforesaid gear by a bracket 23 aflixed to the cap of one of the crank-shaft bearings 8.

A protective cover-plate or hood 24 is advantageously applied over the aforesaid pinion to prevent excessive splashing of oil, said plate or hood being supported by an offset shoulder 22 provided at one end of the shaft 22. v

The described construction and arrange-- ment of the pinion 21 on its stationary shaft 22 in combination with the bull-gear 9 of crank-shaft provides in effect a rotary pump,

the meduim of itsorifices registering in series with the orifices in the latter.

Means for distributing oil from the de scribed impeller to the working parts of the operating pump are in part represented by conduit pipes 25- and 26 connected at opposite ends of the aforesaid hollow shaft 22. Each of said pipes delivers oil to a countershaft bearing 13 from which the oil is distributed by gravity flow to other parts, the.

pipe 25 in this instance being extended to one of said bearings and the pipe 26 being extended to the other, but if there are more than two of such bearings in the pump to which the system is applied, said pipes are branched accordingly.

In addition to the conduits for delivering oil from the impeller to the counter-shaft bearings, a conduit is provided for delivering oil to another distributive point. said additional conduit being represented by the pipe 27 formed as a branch of the aforesaid pipe 26.

The above described conduit pipes delivering oil to distributive points in the pump are shown discharging directly into auxiliary reservoir spaces, the pipes .25- and 26 respectively discharging into troughs 28 provided on the caps of the counter-shaft bearings 13 and the pipe 27 discharging into an elongated trough 29 supported against the wall of the crank case.

Said troughs are shown respectively provided with overflow spouts or detents in their walls through which oil is passed by gravity to other points or returned to the crank case reservoir, the troughs 28 being arranged to overflow into similar troughs 30 provided on the caps 13 of the crank-shaft bearings 8, while the trough 29 overflows direct into the crank-case. In addition, each of said troughs, including troughs 30, is provided with drain holes or slots adapting them to feed oil to working parts of the pump; the troughs 28 and 30' being thus adapted to feed oil directly into their associated bearings, while the trough 29 is adapted to drop oil onto the plunger guides, from which the oil is filmed onto the plungers and from the latter issupplied to their wrist pins through the usual holes therein. Surplus oil from said troughs and from the working parts to which they respectively distribute oil, finds its way back into the crank-case reservoir.

. Means for supplying oil to the out-board extending the casing 20 adjacent said bearing.

Between the bearing 18 and pinion 17 is' 'shown a partition wall 20 providing a provided with an oil groove or channel 20* by which oil therein may overflow into the larger portion of the casing 20 wherein the gear 15 rotates.

A pipe 32 for the return of surplus oil is shown extending to the crank-case 6 from that portion of the casing 20 within which the pinion 17 is enclosed.

From the foregoing description it will be appreciated that oil conveyed to the impeller 21 by the bull-gear 9 during operation of the pump, will be forced through the conduits 25 and 26 to the troughs 28 and 29 respectii'ely, the volume of oil discharge thereinto being sufficient to bring and maintain the oil at a level of overflow therefrom.

As previously stated, some of the oil from the troughs 28 will drain directly into the bearings 13 while the overflow therefrom will fil-l the troughs 30, which latter will in turn feed oil direct to their bearings 8, any surplus of oil being returned to the crankcase by ox'erflow or escape around the oiled parts.

Likewise, as previously stated, some of the oil supplied to the trough 29 will drop onto the plunger-guides and through holes in the latter will film around the plungers, which in turn will feed a suflicient supply of the oil to their wrist-pins through holes provided for that purpose.

While surplus 011 will overflow into the crank-case from said trough 29, an abundant proportion thereof will be fed through the pipe 31 to the reservoir space of the casing 20 surrounding the out-board bearing 18. thereby bringing and maintaining the oil in said space at the level of or slightly above theaxis of the shaft 16, so that the latter may rotate in a bath of oil. When the oil in said space is raised to a point of overflow, it will escape through the aforesaid oil channel 20 and discharge onto the teeth of the rotating gear 15. while excess of overflowing oil will drop into the larger portion of the casing 20 enclosing sard gear. As overflow oil from said space finds its way into the casing 20 under the gear 15:), sald gear, acting like a waterwheel will pick up the oil and splash it onto the pinion 17, thus completely oiling the latter. Oil dropping from the pinion 17 into that portlon of the casing 20 which encloses it Wlll return to the crank-case of the pump through the bearing 18 is represented by the pipe 31aforementioned pipe 32.

from the trough 29 to a point in It is noteworthy that the oil for return to the crank-case must be drained from that portion of the casing :20 underlying the pinion 17 rather than the portion of said casing underlying the gear 15. The reason for this is that said gear acts so efiiciently like a water wheel that it picks up and throws onto said pinion substantially the entire volume of oil overflowing into its occupied portion of said casing.

By arranging the oil return pipe as indicated, no excess oil is allowed to collect around the pinion 17 a very perfect retention of oil being obtained by the employment of a disk (not shown) whirling on the shaft 16 at the side of said pinion. However, this latter feature is regarded as standard practice in gas engine design'and no claim is made thereto.

In order to effect an oil-tight union between the base and cover portions of the casings 6 and 20, the meeting edges of said portions are preferably machined level and smooth. while gaskets or packiugs are also advantageously interposed therebetween.

Obviously, various modifications in structural features and arrangement with substitutions of elements embodying the system may be made in applying the same to a pump or engine without departing from the spir t and scope of this invention. Therefore it is not intended that the invention shall be limited by the appended claims to the specific construction as shown and described.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent of the United States is 1. A lubricative system for pumps and engines having a driven gear rotating in oil; comprising a pinion carried on a stationary shaft and driven by said gear, said pinion having orifices extending from the recesses of its teeth to its bore registering with orifices in said stationary shaft: conduits extending from opposite ends of said shaft; and reservoirs into which said conduits discharge, said reservoirs being located at distributive points and adapted to drain and overflow oil into working parts of the pump or engine.

2. In a lubricative system for pumps and engines having a driven gear rotating in oil; means in combination with said gear for receiving and impelling oil therefrom to points for lubricating working parts of the pump or engine. comprising a pinion carried on a stationary shaft in driven engagement with said gear, said pinion having orifices extending from the recess of its teeth to its bore in registration with orifices in said stationary shaft. and conduits connected to opposite ends of said shaft for conveying and discharging the oil at points of lubrication.

3. A. lubricative system for pumps and engines having a driven gear adapted to rotate in oil: comprising a pinion driven by said gear from which it receives oil, said pinion having orifices extending from the recesses of its v teeth to its bore for the passage of oil therethrou'gh; a stationary shaft on which said pinion is idly carried, said shaft having orifices thereth'rough registering with the orifices in the aforesaid pinion through which oil is passed; conduits extending from opposite ends of said shaft to points of oil discharge; oil receptive reservoirs into which said conduits discharge, said reservoirs being adapted to distribute and feed oil into working parts of the pump or en gine; and means extending from one of said reservoirs for feeding oil to working parts located outside the crank case of the pump or engine; together with means for returning oil from the working parts to the pump or engine crank-case.

.4. In a lubricative system for pumps and engines having a driven gear rotatable in oil; means in combination with said gear for receiving. impelling and discharging oil therefrom to working parts of the pump or engine for lubricating the latter, said means comprising a pinion mounted on a stationary shaft in driven engagement with the aforesaid gear and having orifices extending from the recesses of its teeth to its bore adapted to consecutive registration with orifices in said shaft through which oil from said gear is forced under pressure; together with means connected at opposite ends of said shaft for distributing and discharging oil at lubricative points.

5. In a pump or engine having a driven gear d pping in oil, means for taking oil from said gear and distributing it to worklng parts of the pump or engine for lubricative purposes. said means embodying a pinion mounted on a stationary shaft in driven engagement with said gear and having orifices extending from the recesses of its teeth to its bore adapted to consecutive registration with orifices in said shaft through which oil is passed under impelling pressure from the pinion teeth; together with means connected at opposite ends of said shaftfor distributing and discharging the oil at predetermined points for lubricatmg working parts of the pump or engine from which surplus oil is returned to the crank case.

6. A lubricative system for pumps and engines having a driven gear adapted to rotate in oil, embodying means in combination with and operable by said gear for taking-up and impelling oil therefrom to predetermined points for distribution to working parts of the pump or engine, said means comprising a pinion mounted on a stationary shaft in engagement with the aforesaid gear and having orifices extending from the recesses of its teeth to its bore consecutively registrable with recesses in said shaft through which oil is passed under pressure from the pinion teeth; conduits connected at opposite ends of said shaft for conveying and discharging oil therefrom to said points of distributlon; means located at said points for receiving and distributing oil to working parts of the pump or engine; together with means for returning surplus oilfrom working parts 10 of the pump or engine to the crank case thereof, substantially as described.

In testimony whereof we aflix our signatures. WILBUR F. ROSER. ARTHUR C. SAXE. 

